KROK 1 2009 – Question 138 · KROK (Medicine) · Biological Chemistry
A patient presents with twilight vision impairment. Which of the following vitamins should be administered?
- A. Nicotinic acid
- B. Ascorbic acid
- C. Cyanocobalamin
- D. Retinol acetate
- E. Pyridoxine hydrochloride
Hint
Ask which photoreceptors are responsible for vision in dim light and which vitamin is needed to build their visual pigment.
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